A chess-like strategy game, played on a 5×5 grid, where each piece's movement capability changes based on the color of the tile where it starts.

• Designer: Mitsuo Yamamoto
• Coder: Aaron Dalton (Perlkönig)
• Chameleon at BoardGameGeek
• Chameleon at Logy Games (in Japanese)

You can find the rules in the wayback machine.

A 5×5 chess-like game. Every piece steps like a king. Extra movement depends on whether the piece's nature matches the colour of the square it currently occupies.

Inventor: Mitsuo Yamamoto

See BoardGameGeek: Chameleon.

Checked after each turn, in this order:

1. If the player about to move has no legal moves, the player who just moved wins.
2. If the player about to move already has a piece on the opponent's home rank, that player wins (infiltration at the start of their turn).
3. If the player who just moved has exactly one piece left, and it sits on the opponent's home rank, that player wins.

Player 1's home is rank 1; the far rank is 5. Player 2's home is rank 5; the far rank is 1.

Chequered 5×5. Player 1 (A) occupies rank 1; player 2 (B) occupies rank 5. Each piece also has a nature (light or dark) matching or opposing the square:

• Rank 5: a5 BW, b5 BB, c5 BW, d5 BB, e5 BW
• Rank 1: a1 AW, b1 AB, c1 AW, d1 AB, e1 AW

(The second letter is nature: B = dark square nature, W = light.)

Move one of your pieces.

• King step: one square any direction, onto empty or capturing an enemy.
• Matching nature (piece nature equals the square it stands on): also bishop slides — any distance diagonally, capturing the first enemy, blocked by friendlies.
• Opposing nature: also knight leaps (2×1), onto empty or capturing an enemy.

Capture by replacement. Pieces keep their nature; only the square they stand on changes what extra move they have.

No engine variants.

• Current engine version: 20250130 (2025-01-30). On Abstract Play since 2025-01-31.

• https://boardgamegeek.com/boardgame/273396/chameleon
• http://www.logygames.com/